Envelop-machine.



No. 848,099. I PATENTED MAR. 26, 1907 P. GRANT.

BNVBLOP MACHINE. APPLICATION FILE-D MAE. 1, 1905.

tively and upwardly, to which the support support has an upward-feeding action, Wherean miton'istic mechanism which will at each the predetermined horizontal plane.

.FRAN K PAIEN flflilliljilllfii ltliiirlfrhiillrl i Y 5:

ENVELOF MAGHiNE.

Specification of Letters lattent.

M s rel:

fi 19G?) Patents d Application filed Mai-eh 1.1905. Serial No. 247,878.

To a whom, it may cancer-rt:

it known that l, Fell ni: GRANT, a oitimen of the United. States of America, and a resident of Westlield, in thecounty of Hempden and State of Massachusetts, have invented certain new and useful Improvements in Envelop-lklachines, of which the following is a full, clear, and exact description.

This invention relates to that portion of an envelop, psper-box, or similar machine Whichis known as the elevator thet is, the support for the pile of blanks, which blanks are to be taken. ofl one, at a time, and which by the top of the blank pi 10 is maintained at or approximately at a certain predetermined level. I

In many of the elevators heretofore en1-- ployed or pro ose'd for use the upward feeding of the blan -pi1e support has been in steps or degrees corresponding to the intermittent worl zing impulses of a ratchet-Wheel ,and in such nmnncr that variations of the level of the top of the blank pile would. from time to time occur.

The object of this invention is to provide taking oil of the top blank become operable'to raise the hlm1k-pile support to an extent exactly corresponding to the thickness ol the withdrawn blank, so that the level of the top of the blank pile is elweys maintained up to The invention consists in the combination 1 in a mechanism lorthe purpose described of the vcr'tica-llydnovable elevating-support for the blank pile and mcsnsol' limitation relsmay be moved; means for imparting a lifting movement to such support having capability of yielding relatively to the resistance of said means of limitation shovethe blank pile support, and means for the retention of the support at the required level to which it is successivelymaintained by the lifting means. 7

The invention otherwise and furthermore consists in the combinations oi parts and devices, all. suhstsntisll ns hereinafter full described, and set fort 1 in the claims.

Mechanisms for carrying out the object of l this invention are illustrated in the accompanying drawings, in which the figure is a sectioi'ial elevation showing so much of and envelophmchine us is necessary to make plain the application thereon of the prvsvnt hlanlcpile support. guidmg-shesve e, an

a blank the weight operative, if the improved devices, which their appropriate si t ratio! In the drew-ring an envelopflnsc he, 1mg l for the scconnn ion oi" 58, which is shown, so; the elevator or blsnlopile s pp comprises the top tehlc or plst. t and is vertical member d depending tlimngli and guided in the portion j of the mschincdrenie properly arranged and constructed for such vertical guiding of the hlsi ")llG support i) represents a plunger carried for vertical reclprocatory movement at the i' 1 end of the shaft g, having gu1d1ng--l: es.r at t in the arch 1C, and the plunger shait g has it fixed arm it, to which is connected the rod j, which also sconneotion with the lever (i, which engages in. and receives a swingin motion from the 'c is. be periodically s it down to the level of the top of the i w Welling therect, and constitutes rile-{12km hub of limitation rein-- tivel and upwardly, to Winch the support and lanks thereon he moved.

As it means for iin isrting e lifting movemerit to the blank-pile sir :port and one which has a capability cl? permitting a yielding rel-- stivciy to the resistance imposed by the lun er s cord or chain -i.'v.in. one end elilzreo. st to the verb aherelor the I H its .iruerme diet-e portion takes 1m, and the Weight 0,,suspen exile; the free end oi the cord. or chain, are prov ion in the manner and for the efi'ect clear: apparent in the drawing, and of course a each removal of blank supportis liberated, to lift such support up to the limit of its movement, which limit would, especisliv in en'veio;: --niuichines of the charecter set (11 in the patent to Grant, March 1904-, ho %,256, or in the application for patent oi? G. cl, iilcd December 19, 1904, Serial No. 7137,5654, be constituted by the guinmnrs at the bottom of the plunger in the one 3 or by the footpiece carrying former-plan in the other instance.

At the side of the Vcriimii portion ii oi lilo elevator is u friction-shes '3, adopted by Sl(l('- wise pressure ihrra-ngsii i in be hound against the sidiol' the part ml and in he i'reed therefrom on the ra-leusioi such pressure, and concting with said shoe is an im-s ruwdi- Lion d of the This plunger wil port and blanks thereon may be moved,

'. arm teccontrically curved, while to the other arm t of said lever s secured a connectingof the pile'the s cc becomes locked and remains lockilluntil the plunger has again mentioned plunger-operating cam, F.

a ort, having capability of'yielding relative y ately-pivoted lever M, having the end of its rod a, which is also connected to one end of an intermediatelynvoted' lever 12, which has a roller '0 at its ot 'ier end which enga es in the groove of a'rotary cam N which is s own on the same shaft 1. that carries the afore- By having the cam N properl graded and. timed therewill be a releasing o the elevator so that it is subjected to the upward pressure of its elevatin means at a time when the plunger is dwe ling at its lowermost position for the limitation of such upward movement, While, on. the other hand, just before the plunger-retires u wardly away from the top resumed its lowermost position.

Having thus described my'invention, what I claim, and desire to secure byLetters Pat ent,1s-

1. In an envelop-maehine inf'eomhination, a vertically-movable elevatin ggisupport for the blank pile, a plunger reciprocating there over, and adapted to eriodically dwell at the limit of its descending movement and to constitute a means of limitation relatively, and upwardly, to which the'blank-pile supmeans for imparting intermittent reciprocatory movements to the plunger, means for imparting a lifting movement to such su x and movements to the plunger, a shoe arranged alongside a vertical portion of the blank-pile support, a lever mounted for swinging movemerit adjacent said shoe and. having a camshaped'end operable to bind the shoe against,

ermit its release from, the supphrt, a camliaving an actuatin connection with the lever, a weight, and a exible connection to a portion of which the weight is hung, inter l' mediately sheave su )ported and guided, and

having a portion t ereof connected to the blank-pile support.

igned by me at setts, in

nesses.

v Springfield,- Massachu- FRANK GRANT- Witnesses:

WM. F. BELLOWS, G. R. Dnrs'ooLL.

presence of two subscribingwit 

